package ie.dcu.spca.data;

import java.util.List;
import java.util.Map;

public interface ItemUserDataManager {

    static final char HAVE_TAG = '1';
    static final char DONOT_HAVE_TAG = '0';

    int getCount(int itemId, int userId);

    void updateOrCreate(int itemId, List<Map<String, Integer>> userIdWeightList);
}
